P5 クロロベンゼンの光触媒分解における超音波照射効果

概要

論文の詳細を見る
Effect of sonication on the photocatalytic mineralization of chlorobenzene was studied in TiO_2 suspended aqueous solutions. The yields of gaseous products, CO_2 and CO, were influenced by the simultaneous sonication. By the sonication in combination with photocatalysis, degradation efficiency of chlorobenzene was increased significantly, while the pre-sonication efficiency was not. The reaction process was examined by comparing the rate of product formation for the gaseous products and Cl^- with the decomposition rate of chlorobenzene. The results suggested the presence of many intermediate products that remained in aqueous solution. Decomposition of CB was performed in the solution containing with potassium ferrocyanide as a hydroxyl radical scavenger. The formation of gaseous products were remarkably reduced by the presence of radical scavenger both in the photocatalysis and in the sonolysis. These results indicate that hydroxyl radical has an important role in the sonochemical decomposition as well as in the photocatalysis.
日本ソノケミストリー学会の論文
2005-10-14